A 13-year-old was brought to the emergency department, unconscious, after being hit in the head by a baseball. When the child regains consciousness, 5 hours after being admitted, he cannot remember the traumatic event
MRI shows no structural sign of injury. What injury would the nurse suspect the patient has?
A) Diffuse axonal injury
B) Mild concussion
C) Contusion
D) Classic concussion
Ans: D
Feedback: A classic concussion is an injury that results in a loss of consciousness; characteristically, this usually lasts less than 6 hours. This loss of consciousness is always accompanied by some degree of posttraumatic amnesia. Diagnostic studies may show no apparent structural sign of injury, but the duration of unconsciousness is an indicator of the severity of the concussion. Diffuse axonal injury (DAI) results from widespread shearing and rotational forces that produce damage throughout the brain—to axons in the cerebral hemispheres, corpus callosum, and brainstem. In cerebral contusion, a moderate to severe head injury, the brain is bruised and damaged in a specific area because of severe acceleration-deceleration force or blunt trauma. A mild concussion may lead to a period of observed or self-reported transient confusion, disorientation, or impaired consciousness. Commonly, there is a memory lapse at the time of injury and a loss of consciousness lasting less than 30 minutes.
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